Tune the window to icon and home scaling animation.

Result of several rounds of testing with UX and product. Ready to start
rolling out after this CL.

Bug: 298089923
Flag: ACONFIG com.android.launcher3.enable_scaling_reveal_home_animation DISABLED
Test: tested with the help of UX and PM
Change-Id: I2bcdfa5a314aeeb60acf7b38f3f3d463fedc277e